package practioce;

import java.util.List;

/**
 * create by Sun
 * 2018/8/31
 */
public class quanpailie {
    public static List<List<Integer>> permute(int[] nums) {


        int[] b=new int[nums.length];
        int step=0;
        for(int i=0;i<nums.length;i++){
            if(b[i]==0){
                b[i]=1;
                while(step<nums.length){


                }
            }
        }
        return null;
    }

    public static void main(String[] args) {
        int[] nums={1,2,3};
        System.out.println(permute(nums).toArray().toString());
    }
}
